Coffee percolator



July 1, 1930. R. H. WENTORF COFFEE PERCOLATOR Filed Dec.

I N VEN TOR. Faber? H. Wa er I A TTORNEY.

Patented July 1, 1930 entree sraras earner nearer.

ROBERT H. WENTOBE, OF WEST BEND, WISCONSIN, ASSIGNOR T0 WEST BEND ALUMI-HUM COMPANY, OF WEST BEND, VJISGONSIN, A CORPORATION OF "WISCONSINCOFFEE PERG'OLATOR Application filed December 31, 1929. Serial No.417,751.

The present invention relates to coffee percolators of the type firstdisclosed in an application Serial No. l1? ,7 50 filed concurrently byR. N. Kircher and me as joint inventors. The invention resides incertain improvements upon the structure shown in the said application.

In reducing the present invention to practice, I employ a tubularcontainer having a reduced lower end constituting a cofiee receivingcompartment or chamber and an enlarged upper end constituting a hotwater receiving compartmentor reservoir, as shown generally in the saidapplication, but somewhat modified in the presentinstance,

together with a foraminous separator of novel construction and operationwhich is adapted to be positioned transversely of the containersomewhere near the meeting line of the coffee receiving chamber and thehot water compartment.

Specifically, the coffee receiving chamber of the container constructedin accordance with the present invention, is provided in its side wallsand bottom with a considerable number of fine perforations constitutinga filter or screen through which the hot water permeated with theflavors and essences of the ground coffee may pass, but which willprevent the passage of the ground coffee. Such separator is adjustableas to position, so as to regulate the movement of the hot water throughthe lateral perforations in the side walls of the chamber, this beingeffected by providing the separator with a circular flange or skirtwhich is adapted to engage the walls of the coffee chamber and act as ashield for some or all of the lateral perforations leading from the saidchamber. By this means, the flow of the water may be controlledbyretarding it more or less, so that a complete infusion of the coffee maybe obtained.

Having thus outlined the nature and purposes of my invention, I will nowdescribe the same in particular, and will point out the novelty thereofin the appended claims.

In the accompanying drawing:

Figure 1 isa vertical, central, sectional view showing a container ofspecial and preferred construction, with my separator in positiontherein, and showing also in phantom the upper part of a coffee potinthe mouth of which the percolator has been placed. 7

Fig. 2 is a plan view of the separator, positioned as in Fig. 1, andpartly broken away to show the construction ofthe coffee receivingchamber,the latter being sectioned on a transverse line near its upperend.

In the drawing, the letter A indicates the shell or container of thepercolator, the letter B a coffee pot of conventional form, part of suchpot belng illustrated in phantom, and the letter O my improvedseparator.

As shown, the shell or container of the percolatoris provided with areduced lower portion 10 constituting a coffee receiving chamber oflimited capacity, and an .en-

larged upper portion 11 constituting a hot .water receiving compartmentor reservoir of much greater capacity, the walls of the parts 10 and -11merging at a point a little 'bGlOW the middle of the container, so as toproduce a structure of the proportions described. The drawingillustrates the pre- 'ferred form of the said shell or container,

sage of liquid with a retarded flow.

'lhe separator C is formed as a disc 15 and is provided with a pluralityof small perforations 16. The separator disc 15 18 provided with adepending circular flange 9 or skirt 17, of a diameter about equal tothat of the inside of the coffee receiving chamber, which flange orskirt is extended on lines parallel to the walls of the chamber and isadapted to engagethe said walls with a slight friction, in the mannershown in 1. he disc 15 of the separator has attached at or near itscenter an upstanding post 18, the upper end of which is provided with ahandle or knob 19 of insulating material, the lbnghandle being providedin order that the separator may be easily positioned in the container,and removed therefrom without discomfort due to heat generated in theopdfation of the device.

i In using my invention, a quantity of ground coffee is placed in thecoffee receiving chamber 10, and the separator C is inserted in thecontainer and positioned at 'tl'ltldGSil'd point in the length of thecontainer. A measured quantity of hot water,

rtioned to the number of cups of coffee whichit is desired to make, isthen poured into the compartment or reservoir 11. The .hot water passeswith a retarded flow throughthe perforations 16 in the separator, andinto the chamber below, where it infuses an ground coffee and extractsthe flavors and essences therefrom. The hot water so char continues itsmovement through the mi perforations with which the bottom and walls ofthe chamber are provided, and then drips into the coffee pot B.

The separator being held in the desired position by the frictionalengagement of the skirt or flange 17 with the walls of the chamber 10,may be easily shifted so as to cover or shield any desired horizontalrows of the lateral rforations 14, and so progressively regu ate therate of flow of liqnidfrom the chamber into the coffee pot. If suchoutflow be retarded by adjustment of the position of the separator, abetter attraction of the flavors and essences of the coiee will beobtained, and this will result in the production of a beverage ofimproved unlity. The separator may be pushed so into the codes chamberthat the flange or skirt 17 will cover all of the lateral outlots 14, inwhich case the flow of liquid from the chamber will be greatly retarded,leavi open only the perforations 13 in the m of the chamber, throughwhich the extract will slowly find its wa The movable separator furt erfunctions confining the ground coffee entirely within the co ee chamberand prevents such coffee from rising to the surface of the column ofwater standing in the reservoir. In this manner, the coffee is subjectto pressure by the head of water, and a better hug! saturation iseffected.

aving thus described my invention, whatI c aim and desire to secure byLettors Patent of the United States, is:

1. A coffee percolator comprising a tubcontainer open at its upper endand 088d at its lower end, the said upper end constituting a waterreceiving compartment and the said lower end a coffee receiving1chamber, such lower end being perforate to permit the flow of li uidtherefrom, and a foraminous separator isposed between the waterreceiving compartment and the coffee receivin chamber and movablelongitudinall o the container to regulate the flow of liquid from thesaid chamber.

2. A cofi'ee percolator comprising a tubular container open at its upperend and closed at its lower end, the upper end being of enlargeddiameter and constituting a water receiving compartment and the 'lowerend being of smaller diameter and constituting a coffee receivinchamber, such lower end being perforate to )ermit the flow of liquidtherefrom, and a oraminous separator disposed between the waterreceiving compartment and the coffee receiving chamber and movablelongitudinall of the container to regulate the flow 0 liquid from thesaid chamber.

3. A coffee percolator comprising a tubular container open at its upperend and closed at its lower end, the said upper end constituting a waterreceiving compartment and the said lower end a coffee receiving chamber,the side walls of such chamber bein perforated to permit the flow ofliquid faterally therefrom, and a movable foraminous separator disposedbetween the water receiving compartment and the coffee receivingchamber, the said separator having a depending flange adapted in themovement of the se arator to cover perforations in the walls 0 thechamber to regulate the flow of 1i uid from the said chamber.

4. A co ee percolator comprising a tubular container open at its upperend and closed at its lower end, the upper end being of enlargeddiameter and constituting a water receiving compartment and the lowerend being of reduced diameter and constituting a coffee receivingchamber, the bottom and side walls of such lower end bei perforated topermit the flow of liquid therefrom, and a longitudinally movableforaminous separator disposed between the water receiving compartmentand the coffee receivin chamber, the said separator having a ependingflange adapted in the movement of the separator to cover perforations inthe walls of the chamber to regu- Late the flow of liquid from the saidcham- 5. A coffee percolator comprising a onepiece tubular containeropen at its upper end and closed at its lower end, the said upper endbeing of enlarged diameter and constituting a water receivingcompartment and the said lower end being of reduced diameter andconstituting a coffee receivin chamber, the bottom of such lower end andthe side walls of the chamber being perforated to permit the flow ofliquid therefrom,

mg no ing the Walls of the chamber and adapted in.

its movement to cover perforations therein to retard the flow of liquidfrom the said chamber In testimony whereof, I have signed my name at estBend, this 5th day of December, 1929.

, ROBERT H. WENTORF.

